.. _7seg-plugin:

7-segment LED display for Spartan-3E dev board
==============================================

:date: July 17, 2009

During the preparation for my :ref:`third year project <third-year-project>`
I was playing around with the Xilinx Spartan-3E development board. The book
I used had some application examples for 7-segment displays, which were not
available on the S3E board. I had some of these LED displays in my parts box
and decided to build a plugin (picture below).

.. image:: http://lh6.ggpht.com/_is7PcgDfyqQ/SmB_mRwEiOI/AAAAAAAABBY/AgBVEM43CQk/s400/DSC_0058.JPG

The displays are multiplexed in order to reduce the number of I/O pins used.

.. raw:: html

   <p>
       <a href="http://picasaweb.google.com/lh/photo/-35Om_Qeonk-FY1NiykZ1Q?feat=embedwebsite">
           <img src="http://lh6.ggpht.com/_is7PcgDfyqQ/SmB_meEAjaI/AAAAAAAABBc/V-36lXMJo_I/s400/collage.jpg" />
       </a>
   </p>